Final answer:
Forward tipping of a forklift is prevented when its center of gravity is within its base of support, which is necessary for maintaining stability and preventing gravitational torque from causing it to tip over.
Step-by-step explanation:
Forward tipping will occur unless the forklift's center of gravity is within its base of support. The center of gravity is the point where the weight of the object is considered to be concentrated. For stability, this point must be located within the bounds of the object's support base to prevent toppling. When discussing equilibrium, gravitational torque plays a significant role.
This torque, resulting from gravity acting on the center of mass, can cause an object to rotate around a pivot. In the case of a forklift or any vehicle, if the center of gravity moves beyond the area where the tires contact the ground, the gravitational torque increases and may cause the vehicle to tip over. Vehicles such as forklifts need to have a low center of gravity and a base of support that is sufficient to prevent tipping during operations, especially when handling loads.